People who eat very little salt rarely get high blood pressure, and their blood pressure doesn’t go up as they age. But in other places where people eat more salt—even if they’re just as slim or drink the same amount of alcohol—high blood pressure is way more common. So, salt might be the big reason why.

Cutting back a little on salt — even if you eat a lot now — can help lower blood pressure and reduce the risk of heart attacks and dying early.

People who eat a lot of salt (6-12 grams a day) tend to develop higher blood pressure as they get older, while those who eat very little salt (less than 3 grams) don’t see the same increase.

Eating less salt is linked to a lower chance of developing heart disease. This finding is from the abstract summary - full study details were not available

Eating too much salt makes your blood pressure go up because your kidneys can't get rid of the extra salt, which is why many people have high blood pressure.

Higher dietary salt intake does not lead to sustained increases in blood pressure in healthy humans over months and years as the body self-regulates.